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The VerdictLOW CONVICTION

They tested CBD for sleep on 793 people. The expensive formulas did not beat the cheap ones, and none beat placebo.

Before you order a CBD product, open your medication list and check if any of these are on it: warfarin, apixaban, rivaroxaban, an SSRI, an anti-epileptic, tacrolimus, or cyclosporine. If yes, that bottle is not the supplement decision you think it is. Talk to your doctor before adding it.

  1. The most surprising finding: the largest CBD sleep trial ever run (793 people, four formulations) showed no formulation beat placebo on the main sleep score, and the expensive ones did not beat the cheap ones.
  2. What most people get wrong: the positive cannabinoid research is almost entirely about THC products like nabiximols, not pure CBD; reviewers find the CBD-alone signal evaporates when they strip THC out.
  3. What to watch for: an independently funded, properly powered (300+ adult) blinded trial at 150 mg pure CBD nightly for two months, showing a real polysomnography improvement over placebo, would upgrade the verdict.

A CBD gummy is like firing a single Nerf dart at the front door of a stadium and waiting for the crowd to react. The doses the trials use for any real sleep or pain signal are 30 to 100 times higher than what is in the gummy. By the time it travels through your digestive system, you are getting about 2.5 milligrams of actual CBD into your blood. The dart never reaches the door.

SH
Dr. Seth Holbrook, DPT — Doctor of Physical Therapy • Coach to 300+ clients
I built The Verdict to cut through recycled health advice and show what the evidence actually supports.

CBD for Sleep and Pain

The largest trial ever run on CBD for sleep used 793 people. The expensive formulas did not beat the cheap ones, and none beat placebo.

Conviction: LOW

The Practical Takeaway

Practical takeaway visual
  1. For sleep: fix sleep hygiene, caffeine cut-off, bedroom temperature, and consistent timing first. If you still want to experiment with CBD, the only dose with any hint of a signal is 150 to 300 mg per day sublingual oil with a high-fat meal, for at least four weeks. That is several pounds per dose. Not what is in a gummy.
  2. For chronic pain: CBD-alone has not been shown to work in adequately powered blinded trials. The closest test to the consumer pitch (Vaillancourt 2022, 12-week hand osteoarthritis trial at 20-30 mg per day) was negative.
  3. Before starting any CBD: review your medication list. Warfarin, DOACs (apixaban, rivaroxaban), clobazam, valproate, tacrolimus, cyclosporine, SSRIs, or any narrow-therapeutic-index drug processed by CYP2C9, CYP2C19, or CYP3A4 is a STOP without specialist supervision.
  4. If you proceed: buy only third-party-tested products with a Certificate of Analysis confirming potency and the absence of THC (USP, NSF, or ConsumerLab-verified). The Bonn-Miller 2017 JAMA testing study found 70 percent of OTC products were mislabeled and 20 percent contained measurable THC.
  5. One narrow defensible use: a single 300-600 mg pure CBD oral dose 30-60 minutes before a known acute stressor (public speaking, dental procedure). Real mechanism via the 5-HT1A serotonin pathway, modest evidence. Not the same as a daily gummy.

Before you order a CBD product, open your medication list. If warfarin, apixaban, rivaroxaban, an SSRI, an anti-epileptic, tacrolimus, or cyclosporine is on it, that bottle is not the supplement decision you think it is.

CBD inhibits the same liver enzymes that process those drugs, and OTC labels almost never warn you. Talk to your doctor before adding it.

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Conviction verdict graphic

Conviction

Overall: LOW   This is an endpoint-stratified call. Some narrow sub-claims earn MODERATE; the overall consumer pitch (daily gummy or oil at 10-50 mg for sleep or general pain) does not.

  • Sleep, chronic-pain population, THC-containing or mixed cannabinoid productMODERATE
  • Sleep, general adults, pure CBD at consumer doses (10-50 mg/day)LOW to INSUFFICIENT
  • Chronic pain, pure CBD at any tested doseLOW to INSUFFICIENT
  • Acute pre-stress anxiolysis, single 300-600 mg pure CBD doseMODERATE
  • Topical CBD for peripheral neuropathic painLOW
  • Safety, healthy adults, consumer doses, no interacting medsHIGH (benign)
  • Safety, anyone on CYP-interacting meds or with hepatic dysfunctionMODERATE-HIGH HARM RISK
What would change my mind: sleep claim
A pre-registered, independently funded, double-blind, placebo-controlled RCT of 300 or more adults with diagnosed chronic insomnia (no comorbid chronic pain) taking 150 mg pure CBD nightly for at least 8 weeks, with primary endpoint of ISI score change plus overnight sleep study verification, showing a 3-point or greater ISI separation from placebo with no excess CYP-mediated adverse events, would upgrade general-adult sleep conviction from LOW to MODERATE.
What would change my mind: chronic pain claim
An adequately powered (N at least 250) blinded RCT of pure oral CBD at 300-600 mg per day for chronic neuropathic or musculoskeletal pain showing 30 percent or greater pain reduction vs placebo at 12 weeks with a stable adverse-event profile would upgrade CBD-alone pain conviction from INSUFFICIENT to MODERATE.

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Sources

  1. Saleska JL, et al. (2024). The Safety and Comparative Effectiveness of Non-Psychoactive Cannabinoid Formulations for the Improvement of Sleep: A Double-Blinded, Randomized Controlled Trial. PMID 37162192. N=793. Primary PSQI endpoint NULL vs placebo. Industry-funded.
  2. Vaillancourt R, et al. (2022). Cannabidiol treatment in hand osteoarthritis and psoriatic arthritis: a randomized, double-blind, placebo-controlled trial. PMID 34510141. N=129. NULL on primary pain endpoint.
  3. Boyaji S, Davis V. (2025). Effectiveness of cannabinoids on subjective sleep quality in people with and without insomnia or poor sleep: A systematic review and meta-analysis. PMID 40929927. N=1,077 pooled. CBD-alone subgroup not significant.
  4. Mücke M, Phillips T, Radbruch L, Petzke F, Häuser W. (2018). Cannabis-based medicines for chronic neuropathic pain in adults. Cochrane Database Syst Rev. PMID 29513392. 16 RCTs, N=1,750. Effect attributable to THC-containing products.
  5. AHRQ. (2024). Cannabis and Cannabinoids for Adults With Chronic Pain: A Systematic Review. Federal evidence review. CBD-alone classified insufficient evidence.
  6. Bonn-Miller MO, et al. (2017). Labeling Accuracy of Cannabidiol Extracts Sold Online. JAMA. ~70 percent of OTC products mislabeled.
  7. Bergamaschi MM, et al. (2011). Cannabidiol Reduces the Anxiety Induced by Simulated Public Speaking in Treatment-Naïve Social Phobia Patients. Neuropsychopharmacology. Foundational acute anxiolysis trial at 600 mg.
  8. Damkier P, et al. (2019). Interaction between warfarin and cannabis. Basic Clin Pharmacol Toxicol. CYP450 interaction profile foundational reference.
  9. Spindle TR, et al. (2022). Effects of cannabidiol on simulated driving and cognitive performance: A dose-ranging randomised controlled trial. PMID 35637624.
  10. Walsh KB, et al. (2024). Evaluation of the efficacy, safety, and pharmacokinetics of nanodispersible cannabidiol oral solution (150 mg/mL) versus placebo in mild to moderate anxiety. PMID 38797087.
  11. Walters BR, et al. (2023). Eight Weeks of Daily Cannabidiol Supplementation Improves Sleep Quality and Immune Cell Cytotoxicity. PMID 37836465.
  12. Suraev A, et al. (2023). Medicinal cannabis improves sleep in adults with insomnia: a randomised double-blind placebo-controlled crossover study. PMID 36539991.
  13. Xu DH, et al. (2020). The Effectiveness of Topical Cannabidiol Oil in Symptomatic Relief of Peripheral Neuropathy of the Lower Extremities. PMID 31793418.
  14. Watkins PB, et al. (2020). Cannabidiol and Abnormal Liver Chemistries in Healthy Adults: Results of a Phase I Clinical Trial. CBD hepatotoxicity signal at therapeutic doses.

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